Home / 20,821.46-28,733.33-11,869.11

Finding the Fourth Proportional to 20,821.46, 28,733.33 and 11,869.11

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Solution

The fourth proportional to 20,821.46, 28,733.33 and 11,869.11 is: 16,379.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,821.46 : 28,733.33 = 11,869.11 : x
  2. Step 2: Convert to fraction form
    20,821.46/28,733.33 = 11,869.11/x
  3. Step 3: Cross multiply
    20,821.46x = 28,733.33 × 11,869.11
  4. Step 4: Simplify right side
    20,821.46x = 341,039,003.30
  5. Step 5: Solve for x
    x = 341,039,003.30/20,821.46
  6. Step 6: Final answer
    x = 16,379.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.